| Color family | Gray |
| Code family | 6000 series |
| Hex | #64645A |
| RGB | 100, 100, 90 |
| CIE L*a*b* | 42.10, -1.98, 5.67 |
| Light reflectance | 12.5 |
Hex and LRV verified against Sherwin-Williams’s published color data · 2026
A background color by design, with a yellow cast that keeps it from being featureless. SW 6202 in the Sherwin-Williams range.
At 6.0 on the chroma scale, this is closer to grey than to color, though the yellow cast keeps it from being either. The yellow cast is more noticeable under cool, daylight-balanced bulbs than under standard warm ones, which tend to mute it.
Light reflectance measures 12.5, which is enough to keep a room bright without bouncing light around. It is the sort of color that goes on every wall of a house without feeling overwhelming.
Behr Gray Timber Wolf pairs well as a second surface - close enough in feel to belong in the same room, far enough in lightness to read as two distinct walls (about 29.5 points apart on the reflectance scale).
For anyone tied to a different brand, Vista Paint Serpentine (0443) is the nearest stand-in, at a delta-E of 1.34. 5 other-brand colors land within delta-E 2 of this one - a well-populated part of the spectrum with several near-equivalents to choose from. This color reads consistently across most finishes, so the choice can come down to durability needs rather than how it changes the color.
It is lighter than 18 percent of the Sherwin-Williams range. This is a crowded part of the scale - 643 colors measure within a point of 12.5 - so most brands will have something close. Among grays it is one of the strongest: only 1 percent of them carry more colour. Sherwin-Williams lists it in the 6000 series, alongside 855 other colors.
Sherwin-Williams Cast Iron sits between warm and cool: its hue angle is 109° in CIE Lab at a chroma of 6, with a yellow cast.
The light reflectance value (LRV) of Sherwin-Williams Cast Iron (SW 6202) is 12.5, on a scale where 0 is absolute black and 100 is absolute white, which makes it a very dark color.
Measured on the color wheel, Sherwin-Williams Cast Iron pairs with Vista Paint Rare Orchid (7197, complement), Behr Evergreen Trail (BXC-72, analogous, warmer), Behr Dominant Gray (BXC-17, analogous, cooler), Behr Gray Timber Wolf (760E-3, soft accent).
Sherwin-Williams Cast Iron's hex value is #64645A, RGB 100, 100, 90.
Sherwin-Williams Cast Iron is classified as a gray, with a yellow cast.
The nearest Pantone TCX color to Sherwin-Williams Cast Iron is 18-0515 TCX Dusty Olive, delta-E 1.92; the nearest RAL Classic is RAL 7039 Quartz grey, delta-E 2.36.
The closest cross-brand match to Sherwin-Williams Cast Iron is Vista Paint Serpentine (0443), at a delta-E of 1.34.
| HEX | #64645A |
| RGB | 100, 100, 90 |
| CMYK | 0%, 0%, 10%, 61% |
| HSL | 60°, 5%, 37% |
| HSV | 60°, 10%, 39% |
| CIE Lab | 42.1, -1.98, 5.67 |
| LCh | 42.1, 6.01, 109.2° |
| XYZ | 11.66, 12.56, 11.48 |
| Pantone (nearest) | 18-0515 TCX Dusty Olive · ΔE 1.92 |
| RAL (nearest) | RAL 7039 Quartz grey · ΔE 2.36 |
| 18-0515 TCX Dusty Olive | ΔE 1.92 | |
| 18-0510 TCX Castor Gray | ΔE 3.45 | |
| 18-0513 TCX Bungee Cord | ΔE 3.62 | |
| RAL 7039 Quartz grey | ΔE 2.36 | |
| RAL 7009 Green grey | ΔE 3.33 | |
| RAL 7010 Tarpaulin grey | ΔE 4.78 |
Pantone TCX and RAL Classic are physical standards; these are their published sRGB approximations, so check a fan deck before specifying. Pantone® and RAL are trademarks of their respective owners.
Shades mix the color toward black, tints toward white. Click any step to find the paint colors closest to it.